.pre {
    margin-top: 90px;
}

.start {
    position: absolute;    width: 140px;    height: 50px;    background-color: #DE891F;    border: 4px solid #DC8100;    cursor: pointer;    text-align: center;    line-height: 46px;    color: #fff;    left: 36%;    top: 40%;
}

.ramka p {
    text-indent: 20px;        
    margin-top: 0px;    
    margin-bottom: 0px;
    font-size: 16px;
}

.norightanswer {
    color: red;
    clear: both;
}